code: def test_slices():
      def f(x):
          s = slice(None, -1, None)
          y = x[s]
          return y[0]
  
      grad(f)([1.0, 2.0, 3.0])
  
      def f(x):
          y = x[1:3]
          return y[0]
  
      grad(f)([1.0, 2.0, 3.0])
  
file_path: autograd/tests/test_list.py
imports: import autograd.numpy
  import autograd.numpy.random
  from autograd.test_util import check_grads, check_vjp, check_jvp
  from autograd import grad
  from autograd import list, isinstance
label_desc: Use image node_id 3 for calling a global function with example usage: test_slices() and returns: y, y